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%
%  This file is part of Logtalk <https://logtalk.org/>
%  SPDX-FileCopyrightText: 2020-2021 Paulo Moura <pmoura@logtalk.org>
%  SPDX-FileCopyrightText: 2003 Gregory J. Duck
%  SPDX-License-Identifier: GPL-2.0-or-later
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:- set_logtalk_flag(hook, toychrdb).


:- object(gcd,
	extends(toychrdb)).

	gcd(0) <=> true.
	gcd(N) \ gcd(M) <=> M >= N | P is M - N, gcd(P).

:- end_object.
